This is fairly direct evidence that "tough on crime" isn't that great of an idea. And all you people upset that we haven't followed the UK's lead and immediately imprisoned all riot participants? All those new prisoners has overwhelmed prisons and are leading to increased gang violence. "Who cares if a bunch of prisoners beat up on each other?" Well, they do have to leave prison at some point. Your petty riot criminal is now a gang member with a taste for blood. Like the seal on Arrested Development.